9-letter words containing a, d, r
- aquadrome — a venue for water sports
- aquitards — Plural form of aquitard.
- arachidic — of or derived from arachidic acid.
- arachnids — Plural form of arachnid.
- arachnoid — the middle of the three membranes that cover the brain and spinal cord
- araneidan — related to or belonging to the araneid
- arbor day — a tree-planting day observed individually by the states of the U.S., usually in spring
- arborized — Simple past tense and past participle of arborize.
- arch head — a vertical, arc-shaped member fixed to the end of a walking beam, for supporting a chain from which a pump rod or the like is suspended in such a way as to let it rise and fall vertically.
- archaized — Simple past tense and past participle of archaize.
- archdruid — a chief or principal druid
- archducal — of or relating to an archduke, archduchess, or archduchy
- archduchy — the territory ruled by an archduke or archduchess
- archdukes — Plural form of archduke.
- archfiend — a chief fiend
- archibald — a masculine name: dim. Archie, Archy
- arcsecond — unit used in astronomy
- arduously — requiring great exertion; laborious; difficult: an arduous undertaking.
- area code — The area code for a particular city or region is the series of numbers that you have to dial before someone's personal number if you are making a telephone call to that place from a different area.
- areolated — marked by areolae
- arid zone — either of the zones of latitude 15–30° N and S characterized by very low rainfall and desert or semidesert terrain
- aridities — being without moisture; extremely dry; parched: arid land; an arid climate.
- arillated — (of seeds) having an aril
- aristides — known as Aristides the Just. ?530–?468 bc, Athenian general and statesman, who played a prominent part in the Greek victories over the Persians at Marathon (490), Salamis (480), and Plataea (479)
- armadillo — An armadillo is a small animal whose body is covered with large bony scales and which rolls itself into a ball when it is attacked. Armadillos are mainly found in South and Central America.
- arnoldson — Klas Pontus [klahs pawn-tuh s] /klɑs ˈpɔn təs/ (Show IPA), 1844–1916, Swedish author and politician: Nobel Peace Prize 1908.
- arraigned — to call or bring before a court to answer to an indictment.
- arrogated — Simple past tense and past participle of arrogate.
- arrowhead — An arrowhead is the sharp, pointed part of an arrow.
- arrowwood — any of various trees or shrubs, esp certain viburnums, having long straight tough stems formerly used by North American Indians to make arrows
- arseholed — very drunk
- arsenides — Plural form of arsenide.
- artevelde — Jacob van1290?-1345; Fl. statesman
- arthrodia — a joint
- arthropod — any invertebrate of the phylum Arthropoda, having jointed limbs, a segmented body, and an exoskeleton made of chitin. The group includes the crustaceans, insects, arachnids, and centipedes
- arytenoid — denoting either of two small cartilages of the larynx that are attached to the vocal cords
- ascarides — any parasitic roundworm of the genus Ascaris, found in the human small intestine and causing colic and diarrhea.
- ascenders — Plural form of ascender.
- ascendeur — a metal grip that is threaded on a rope and can be alternately tightened and slackened as an aid to climbing the rope: used attached to slings for the feet and waist
- asiderite — an iron-free meteorite consisting of friable material.
- asmoulder — in a smouldering or slowly burning manner
- aspirated — (of a stop) articulated with some force, so that breath escapes with audible friction as the stop is released
- assuredly — If something is assuredly true, it is definitely true.
- asteroids — Plural form of asteroid.
- astraddle — with a leg on either side of something
- astricted — Simple past tense and past participle of astrict.
- astringed — to compress; bind together; constrict.
- astrodome — a transparent dome on the top of an aircraft, through which observations can be made, esp of the stars
- at a word — at once
- at hazard — at risk; in danger